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ARM Climate Research Facility Quarterly Value-Added Product Report Third Quarter: April 01–June 30, 2011

Description: The purpose of this report is to provide a concise status update for value-added products (VAP) implemented by the Atmospheric Radiation Measurement Climate Research Facility. The report is divided into the following sections: (1) new VAPs for which development has begun, (2) progress on existing VAPs, (3) future VAPs that have been recently approved, (4) other work that leads to a VAP, and (5) top requested VAPs from the archive
Date: August 18, 2011
Creator: Sivaraman, C
Partner: UNT Libraries Government Documents Department

Report on Broadband Solar Radiometer Inconsistencies at the Atmospheric Radiation (ARM) Southern Great Plains (SGP) Central Facility During the ARM Enhanced Shortwave Experiment (ARESE)

Description: Broadband solar radiometer data collected at the U.S. Department of Energy’s Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) Central Facility during the ARM Enhanced Shortwave Experiment (ARESE) exhibits inconsistencies and inter-calibration offsets. This report examines these problems, and in some cases, suggests error sources and possible solutions. The data discussed here covers the period from September 28, 1995, through October 30, 1995.
Date: June 18, 1996
Creator: Long, CN
Partner: UNT Libraries Government Documents Department

Relative Rate and Product Studies of the Reactions of Atomic Chlorine with Tetrafluoroethylene, 1,2-Dichloro-1,2-difluoroethylene, 1,1-Dichloro-2,2-difluoroethylene, and Hexafluoro-1,3-butadiene in the Presence of Oxygen

Description: This article assesses rates of reactions in the context of atmospheric chemistry.
Date: August 31, 2016
Creator: Herath, Thushani N.; Clinch, Eric C.; Orozco, Ivan; Raign, Erin L. & Marshall, Paul
Partner: UNT College of Arts and Sciences

ARM Climate Research Facility Quarterly Value-Added Product Report January 1–March 30, 2011

Description: The purpose of this report is to provide a concise status update for value-added products (VAP) implemented by the Atmospheric Radiation Measurement Climate Research Facility. The report is divided into the following sections: (1) new VAPs for which development has begun, (2) progress on existing VAPs, and (3) future VAPs that have been recently approved.
Date: June 14, 2011
Creator: Sivaraman, C
Partner: UNT Libraries Government Documents Department

Chemical Engineering Division Environmental Chemistry Annual Report: July 1975-June 1976

Description: The chemistry of airborne particulate matter is being investigated by means of laboratory and field studies. Experiments were conducted using the flow reactor to identify the reaction conditions under which detectable amounts of sulfate particles could be formed under gaseous sulfur dioxide. A procedure was developed for the analysis of acidic and neutral ammonium sulfate in filter-collected samples of atmospheric particulate matter.
Date: 1976?
Creator: Cunningham, P. T.; Kumar, R.; Holt, B. D.; Hubble, B. R.; Johnson, S. A.; Nielsen, E. et al.
Partner: UNT Libraries Government Documents Department

2010 Atmospheric System Research (ASR) Science Team Meeting Summary

Description: This document contains the summaries of papers presented in poster format at the March 2010 Atmospheric System Research Science Team Meeting held in Bethesda, Maryland. More than 260 posters were presented during the Science Team Meeting. Posters were sorted into the following subject areas: aerosol-cloud-radiation interactions, aerosol properties, atmospheric state and surface, cloud properties, field campaigns, infrastructure and outreach, instruments, modeling, and radiation. To put these posters in context, the status of ASR at the time of the meeting is provided here.
Date: May 4, 2011
Creator: Dupont, D. L.
Partner: UNT Libraries Government Documents Department

Improved Correction of IR Loss in Diffuse Shortwave Measurements: An ARM Value-Added Product

Description: Simple single black detector pyranometers, such as the Eppley Precision Spectral Pyranometer (PSP) used by the Atmospheric Radiation Measurement (ARM) Program, are known to lose energy via infrared (IR) emission to the sky. This is especially a problem when making clear-sky diffuse shortwave (SW) measurements, which are inherently of low magnitude and suffer the greatest IR loss. Dutton et al. (2001) proposed a technique using information from collocated pyrgeometers to help compensate for this IR loss. The technique uses an empirically derived relationship between the pyrgeometer detector data (and alternatively the detector data plus the difference between the pyrgeometer case and dome temperatures) and the nighttime pyranometer IR loss data. This relationship is then used to apply a correction to the diffuse SW data during daylight hours. We developed an ARM value-added product (VAP) called the SW DIFF CORR 1DUTT VAP to apply the Dutton et al. correction technique to ARM PSP diffuse SW measurements.
Date: November 1, 2003
Creator: Younkin, K & Long, CN
Partner: UNT Libraries Government Documents Department

ARM Cloud Retrieval Ensemble Data Set (ACRED)

Description: This document describes a new Atmospheric Radiation Measurement (ARM) data set, the ARM Cloud Retrieval Ensemble Data Set (ACRED), which is created by assembling nine existing ground-based cloud retrievals of ARM measurements from different cloud retrieval algorithms. The current version of ACRED includes an hourly average of nine ground-based retrievals with vertical resolution of 45 m for 512 layers. The techniques used for the nine cloud retrievals are briefly described in this document. This document also outlines the ACRED data availability, variables, and the nine retrieval products. Technical details about the generation of ACRED, such as the methods used for time average and vertical re-grid, are also provided.
Date: September 12, 2011
Creator: Zhao, C; Xie, S; Klein, SA; McCoy, R; Comstock, JM; Delanoë, J et al.
Partner: UNT Libraries Government Documents Department

Atmospheric Data Package for the Composite Analysis

Description: The purpose of this data package is to summarize our conceptual understanding of atmospheric transport and deposition, describe how this understanding will be simplified for numerical simulation as part of the Composite Analysis (i.e., implementation model), and finally to provide the input parameters needed for the simulations.
Date: September 1, 2005
Creator: Napier, Bruce A. & Ramsdell, James V.
Partner: UNT Libraries Government Documents Department

ARM mobile facility surface meteorology (MET) handbook.

Description: The Atmospheric Radiation Measurement (ARM) Mobile Facility Surface Meteorology station (MET) uses mainly conventional in situ sensors to obtain 1-min statistics of surface wind speed, wind direction, air temperature, relative humidity (RH), barometric pressure, and rainrate. Additional sensors may be added to or removed from the base set of sensors depending upon the deployment location, climate regime, or programmatic needs. In addition, sensor types may change depending upon the climate regime of the deployment. These changes/additions are noted in Section 3.
Date: April 1, 2006
Creator: Ritsche, M. T. & Division, Environmental Science
Partner: UNT Libraries Government Documents Department

ARM Climate Research Facility Monthly Instrument Report September 2010

Description: The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Climate Research Facility instrumentation status. The report is divided into the following five sections: (1) new instrumentation in the process of being acquired and deployed, (2) field campaigns, (3) existing instrumentation and progress on improvements or upgrades, (4) proposed future instrumentation, and (5) Small Business Innovation Research instrument development.
Date: October 18, 2010
Creator: Voyles, J. W.
Partner: UNT Libraries Government Documents Department

ARM Climate Research Facility Quarterly Instrument Report Fourth Quarter: October 1–December 30, 2010

Description: The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Climate Research Facility instrumentation status. The report is divided into the following sections: (1) new instrumentation in the process of being acquired and deployed, (2) existing instrumentation and progress on improvements or upgrades, (3) proposed future instrumentation, and (4) Small Business Innovation Research instrument development.
Date: January 17, 2011
Creator: Voyles, JW
Partner: UNT Libraries Government Documents Department

Refinement, testing, and application of an Integrated Data Assimilation/Sounding System (IDASS) for the DOE/ARM Experimental Program. Final report for period September 20, 1990 - May 8, 1997

Description: This report describes work done by NCAR under the ''Refinement, Testing, and Application of an Integrated Data Assimilation/Sounding System (IDASS) for the DOE/ARM Experimental Program''. It includes a discussion of the goals, findings and a list of 27 journal articles, 92 non-refereed papers and 30 other presentations not associated with a formal publication.
Date: April 9, 2002
Creator: Parsons, David B.
Partner: UNT Libraries Government Documents Department

An investigation of the effect of sulfate on cloud microphysics using a chemistry/transport model

Description: Here the authors have used the output of a chemistry/transport model to identify a situation in which sulfate aerosol from industrial sources may be expected to exert a strong influence on cloud microphysical and radiative properties in an oceanic area that is well displaced from source regions. Pertinent cloud microphysical properties (optical depth and cloud drop radius) are inferred from radiance data obtained from satellite remote sensing. Comparison of these quantities in situations where the model indicates the presence or absence of industrial sulfate has allowed identification of the expected signature of one aerosol indirect effect--an increase in droplet number concentration and concomitant decrease in droplet radii, on a synoptic scale. Although the information obtained on changes in cloud optical depth is too meager to draw conclusions regarding radiative forcing, there is no doubt that the cloud microphysical properties are influenced by the incursion of continental sulfate aerosol in a way that is consistent with that expected by the Twomey indirect forcing mechanism.
Date: January 14, 2001
Creator: Wei, H.D.; Green, R.; Schwartz, S.E. & Benkovitz, C.M.
Partner: UNT Libraries Government Documents Department